CBQE-927: skip setup operations for upgrade tests

Change-Id: I3a2e9616990e2066e6ed0814e8e7446c4b1d35df
Reviewed-on: http://review.couchbase.org/23656
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: buildbot <build@couchbase.com>